package com.lzm.reggie.service.impl;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.lzm.reggie.common.CustomException;
import com.lzm.reggie.entity.Category;
import com.lzm.reggie.entity.Dish;
import com.lzm.reggie.entity.Employee;
import com.lzm.reggie.entity.Setmeal;
import com.lzm.reggie.mapper.CategoryMapper;
import com.lzm.reggie.mapper.EmployeeMapper;
import com.lzm.reggie.service.CategoryService;
import com.lzm.reggie.service.DishService;
import com.lzm.reggie.service.EmployeeService;
import com.lzm.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {


    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;
    /**
     * 根据ID删除分类
     * @param id
     */
    @Override
    public void remove(Long id) {

        LambdaQueryWrapper<Dish> dishLambdaQueryWrapper=new LambdaQueryWrapper<>();
        //添加查询条件,根据id进行查询
        dishLambdaQueryWrapper.eq(Dish::getCategoryId,id);
        int count = dishService.count(dishLambdaQueryWrapper);
        //查询当前分类是否关联菜品，如果关联，抛出业务异常
        if (count>0){
            //关联，抛出业务异常
            throw  new CustomException("当前分类下关联菜品,不能删除");
        }
        LambdaQueryWrapper<Setmeal> setmealLambdaQueryWrapper=new LambdaQueryWrapper<>();
        //添加查询条件,根据id进行查询
        setmealLambdaQueryWrapper.eq(Setmeal::getCategoryId,id);
        int count1 = setmealService.count(setmealLambdaQueryWrapper);
        //查询当前分类是否关联套餐，如果关联，抛出业务异常
        if (count1>0){
            //关联，抛出业务异常
            throw  new CustomException("当前分类下关联套餐,不能删除");
        }

        //都没关联，正常删除
        super.removeById(id);
    }
}
